Thirteen sandy soil specimens were collected from the earth’s surface along an exploring line across the target area. Three different ways （called A

B and C for short） were chosen to get the TL data of every specimen for anlysis. Our comparative study confirms that the way A （using the original mixed sandy soil sample） appears most desirable

the way B （using fine-grain sample only） comes second

whereas the way C （inserting some LiF slices in every collected specimen at 25mm deep for 175 days before measuring TL signals from the slices） dose not seem successful. A brief discussion is given.